506 01 2303 01 15
Specifications are subject to change without notice.
Table 8 – Electri cal Data — ChS072 --121 60 Hz Units
UNIT
NOMINAL
POWER
SUPPLY
VOLTAGE
RANGE
}
COMPRESSOR WITHOUT POWERED CONVENIENCE OUTLET
No. 1 No. 2 OFM (e a) POWER SUPPLY DISCONNECT SIZE
V --- P h --- H z MIN MAX RLA LRA RLA LRA QTY FLA MCA
Fuse or
HACR
Brkr
FLA LRA
CHS072*A/B
Units produced
on or after
02/09/2015
208/230---3 ---60 187 253 19.6 136 --- --- 2 1.5 28/28 45/45 26/26 142/142
4 6 0 --- 3 --- 6 0 414 506 8.2 66 --- --- 2 0.8 12 20 11 70
5 7 5 --- 3 --- 6 0 518 633 6.6 55 --- --- 2 0.7 10 15 9 59
CHS072*A/B
Units produced
on or prior to
02/08/2015
208/230---3 ---60 187 253 19.0 123 --- --- 2 1.5 26.8/26.8 45/45 25/25 129/129
4 6 0 --- 3 --- 6 0 414 506 9.7 62 --- --- 2 0.8 13.7 20 13 66
5 7 5 --- 3 --- 6 0 518 633 7.4 50 --- --- 2 0.7 10.7 15 10 54
CHS072*G/H
208/230---3 ---60 187 253 17.5 136 --- --- 2 1.5 25/25 30/30 24/24 142/142
4 6 0 --- 3 --- 6 0 414 506 8.4 66 --- --- 2 0.8 13 20 12 70
5 7 5 --- 3 --- 6 0 518 633 6.3 55 --- --- 2 0.7 10 15 9 59
CHS091*A/B
208/230---3 ---60 187 253 25.2 164 --- --- 2 1.5 35/35 50/50 32/32 170/170
4 6 0 --- 3 --- 6 0 414 506 12.7 100 --- --- 2 0.8 18 30 16 104
5 7 5 --- 3 --- 6 0 518 633 11.0 78 --- --- 2 0.7 16 25 14 82
CHS121*A/B
208/230---3 ---60 187 253 30.8 225 --- --- 2 1.5 42/42 60/60 39/39 231/231
4 6 0 --- 3 --- 6 0 414 506 16.7 114 --- --- 2 0.8 23 30 21 118
5 7 5 --- 3 --- 6 0 518 633 12.8 80 --- --- 2 0.7 18 30 16 84
CHS121*G/H
208/230---3 ---60 187 253 15.9 110 15.6 110 2 1.5 39/39 50/50 40/40 226/226
4 6 0 --- 3 --- 6 0 414 506 7.7 52 7.7 52 2 0.8 19 25 20 108
5 7 5 --- 3 --- 6 0 518 633 5.7 39 5.8 39 2 0.7 15 20 15 82
Legend and Notes for Table 8
LEGEND:
BRKR --- Circuit breaker
CO --- Convenient outlet
F L A --- F u l l L o a d A m p s
LRA --- Locked Rotor Amps
MCA --- Minimum Circuit Amps
Protection
NEC --- National Electrical Code
PWRD CO --- Powered convenient outlet
RLA --- Rated Load Amps
UNPWR CO --- Unpowered convenient outlet
NOTES:
1. In compliance with NEC requirements for multimotor and
combination load equipment (refer to NEC Articles 430 and
440), the overcurrent protective device for the unit shall be
fuse or HACR breaker. Canadian units may be fuse or circuit
breaker.
2. The MCA values are calculated in accordance with The NEC.
Article 440.
3. Motor RLA and L RA values are established in accordance
with Underwriters’ Laboratories (UL). Standard 1995.
4 . T h e 5 7 5 --- v u n i t s a r e U L , C a n a d a --- l i s t e d o n l y.
5. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply
voltage is greater than 2%. Use the following formula to de-
termine the p ercentage of voltage imbalance.
Example: Supply voltage is 230-3-60
% Voltage Imbalance = 100 x
max voltage deviation from average voltage
average voltage
AB = 224 v
BC = 231 v
AC = 226 v
Average Voltage =
(224 + 231 + 226)
=
681
3
3
= 227
Determine maximum deviation from average voltage.
(AB) 227 – 224 = 3 v
(BC) 231 – 227 = 4 v
(AC) 227 – 226 = 1 v
Maximum deviation is 4 v.
Determine percent of voltage imbalance.
% Voltage Imbalance = 100 x
4
227
= 1.76%
This amount of phase imbalance is satisfactory as it is below the
maximum allowable 2%.
IMPORTANT: If the supply voltage phase imbalance is more than
2%, contact your local electric utility company immediately.
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